1989 Chevy Corsica ERRATIC IDLE

1989 CHEVROLET CORSICA
132,025 MILES • 6 CYL • FWD • AUTOMATIC
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DRGNKPR17201
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  • 4 POSTS
ALRIGHT I REPLACED THE AIR CONTROL VALVE, O2 SENSOR, THROTTLE POSITION SENSOR, CAT, AND AIR TEMP SENSOR, RUNS FINE GOING DOWN THE ROAD BUT WHEN I COME TO A STOP THE IDLE STARTS JUMPING UP AND DOWN AND WHEN I PUT IT IN PARK IT STALLS WHAT ELSE DO I NEED TO REPLACE TO GET IT TO RUN PROPERLY
May 20, 2008 at 1:56 PM
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MASTERTECHTIM
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  • 4,750 POSTS
the tps is adjustable, did you set it properly. did you set the minimum air rate? did you touch the idle screw? be honest.
May 20, 2008 at 2:32 PM
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MASTER TECH DAN
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  • 83 POSTS
check and see if you have a vaccum leak also check the egr valve to see if it is open you should also unplug the 4 wire harness at the trans.
May 20, 2008 at 2:33 PM
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DRGNKPR17201
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no i didnt touch the screw and how do you set ajust the tps
May 20, 2008 at 2:39 PM
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DRGNKPR17201
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  • 4 POSTS
how do u adjust the minimum air rate
May 20, 2008 at 2:40 PM
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MASTERTECHTIM
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  • 4,750 POSTS
you need a scan tool to watch the angle and voltage. and then set angle to 0 and set minimum air rate to as close to 14 as you can get. tps should be about .68 volts at idle.
May 20, 2008 at 3:17 PM
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DRGNKPR17201
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i will let the shop do that and thank you for your help
May 20, 2008 at 3:32 PM